Abstract
In case of constructing the mountain tunnel, geological survey such as seismic prospecting and electrical prospecting is often carried out However, the support design based on these prospecting results is not quantitative, so it is often differ from actual geological condition. The other side, it is important from safety and economical efficiency to gasp accurately the geological condition beforehand in design and construction In this paper, the systematization of geological evaluation technique that converted from seismic velocity and electric resistivity to porosity and saturation was discussed As the results, the evaluation system of rock mass using the both of seismic velocity and electric resistivity are proposed, and it is recognized that this system can be applied on the in-site rock mass site.
